Method of making elastic novelty yarn



July 25, 1944. 5 w, ALDERFER 2,354,449

METHOD 01 MAKING ELASTIC NOVELTY YARN Original Filed Dec. 4, 1940INVENTOR STERLING W. ALDERFER ATTORN EY5 Patented July 25, 1944 SterlingW. Alder-fer, Alrron, Ohio, assignor to The Firestone -Tire & RubberCompany, Akron, Ohio, a corporation of Ohio Original applicationDecember 4, 1940, .Serial No.

Divided and this application March 5, 1943, Serial No. 478,104

This invention relates to the textile art, and especially to a methodofmaking an elastic novelty yarn which is formed of separate elastic andinelastic threads, yarns, cords, or strands.

A general object of the present invention is to" provide a method ofmaking a novel type of elastic yarn. The foregoing and other objectswill be manifest from the following description of the invention, withparticular reference to the accompanying drawing of which:

Figure 1 is an elevation of a slightly tensioned elastic yam made by theinvention, which yarn is stranded out at one end to showthe componentsthereof;

Figure 2 is an elevation of the yarn of Figure 1 when it is relaxed; and

Figure 3 is a diagrammatic elevation of app ratus for forming the yarnof Figure 1.

This application is a division of my application. Serial No. 368,477,filed December 4, 1940.

Referring in detail to the drawing, an elastic yarn I is shown, whichyarn includes a rubber thread it which is twisted together with a corethread l2. A yarn I3 is loosely'wrapped around the two threads II and I2as a unit in the same direction as the twist of the threads II and I2.Note that the convolutions of the yarn it around the elastic thread aredrawn into substantially abutting relation when the yarn I0 is relaxedas the yarn I3 is wound upon the threads II and I2 when the rubberthread II is tensioned. A binder thread I4 is wrapped around the unitformed of the elastic thread ll, core thread l2 and-yam l3 to retain theyarn and thread together and form a finished yarn therefrom, the binderthread being wound in the opposit directionto the yarn I3, as shown.

The binder thread H, the core thread 12, and the yarn It all may be madefrom cotton, wool or other suitable materials. Note that loops and/orconvolutions of the yarn I! extend radially outwardly of the elasticyarn l0 betweenthe convolutions of the binder thread 14 and that theyarn l0 may be tensioned any desired amount, or else completely relaxedto bring such loops or convolutions of the yarn it into the desiredrelationship and vary the appearance of the yarn. In all events, theyarn l0 presents an attractive appearance and is adapted to befabricated in .either tensioned or relaxed form. Obviously theelasticity of the yarn adapts it for new and desirable uses overordinary novelty yarns.

The yarn Ill may be made upon apparatus including rollers 20 and 20abetween which the core thread l2 and elastic thread II are drawn,

2 Claims. (01. 57-463) the elastic thread being held under tension asthe yarn I0 is produced. The core thread .12 is wound upon a bobbin 2|and drawn therefrom over a guide 22 while the elastic thread II iscarried by a flanged roll 23 which is supported on a roll -24 driven bya chain 25. The outer surface of the thread ll carried by the roll 23rests directly upon the roll 24 so that,- by driving the roll 24 at auniform speed, the elastic thread is unwrapped from the roll 23 at auniform rate. The elastic thread H should be placed upon the "roll 23under uniform tension to aid in removing core thread faster than ththreads are drawn through the rolls 20 and 20a and at an appreciableangle to their axes to facilitate wrapping it therearound. The yarn l3is'drawn from the bobbin 30 over a guide 35 by driven rolls 3! and 34.The composite yarn passes through a-gu'ide 28, a ring traveler 29 andthen is wrapped around a bobbin 3|. The elastic thread and the corethread are twisted together and the yarn I3 is twisted therearound byrotating the bobbin through a driven pulley 32. The ring traveler 2! isslidably mounted for rotation on a vertically movable bar 88 so'that thering traveler can move up and down with relation to the bobbin 3| to aidin distributing the yarn thereover. The yarn III is completed by passingthe unit formed from the core thread l2, elastic thread ill, the bobbin3| is substituted for the bobbin 2| and the yarn thereon is ledtherefrom through therolls 20 and 20a and over the guide 28 and fallerbar 2I, after which the binder thread I4 is led to the yarn in a similarmanner to that in which the yam II is fed. The binder thread 4 istwisted onto the unitformed by the elastic thread, core thread and yarnby leading the composite yarn through the guide 28 and ring traveler 25to a rotating bobbin substituted for the bobbin 3|. Of course, thebobbin in this case will be driven in the opposite direction from thebobbin 3| to wind the binder thread oppositely to the yarn l2.

It will be appreciated that the'yarn l0 may be produced with the elasticthread ll under any desired tension. Usually both the core thread l2 andthe binder thread l4 are wrapped around the I! or H, or, especially, theyarn 13, which color-.

ingmay vary in difierent sections of the thread or yarn colored. a

In some cases, it may be desirable to feed the unit formed of theelastic thread H, core thread i2, and yarn I: to the rolls 2! and 20a bya positive feed when completing the yarn Ill. That is, the bobbin 3|could be provided with end flanges or other means so that asubstantially uniform diameter thread deposit is formed thereon and thebobbin then could be placed. on the roll 24 which would positively feedthe thread to. the twisting apparatus at a constant rate. In

all events, the thread wrapped upon the bobbin II is at uniform tensionwhich aids in removing the thread therefi om uniformly.

- While one embodiment of the invention has been completely illustratedand described herein,

it will be apparent that modification thereof may be made withoutdeparting from the scope of the invention as deilned in the appendedclaims.

I claim:

1. That method of forming an elastic novelty yarn comprising tensioninga rubber thread, positioning a core thread parallel and adjacent therubber thread, feeding the aligned threads to a bobbin, positivelyfeeding a yarn to the aligned threads faster than they are fed to thebobbin, rotating the bobbin to twist the rubber thread 10 and the corethread together and to twist the yarn loosely thcrcaround and form aunit therefrom, pulling the unit from the bobbin to tension it, leadingthe tensioned unit to a second bobbin, feeding a binder thread to thetensioned 15 unit, and rotating the second bobbin in the oppositedirection to the first bobbin to wrap the binder thread around the unitand form a novelty elastic yarn. V-

2. A method of making an elastic novelty yarn 20 comprising feeding arubber thread under tension, associating the tensioned'rubber threadwith a substantially non-elastic core thread, twisting a yarn looselyaround the tensioned rubber thread and core thread to form a unittherefrom, and

g twisting a binder thread around the unit to form a novelty elasticyarn. V

- S'I'ERLING W. ALDERFER.

